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1、NounClause一引导词二it作形式主语和形式宾语三语序四时态五主谓一致六名词性从句中的虚拟语气 七否定前移八同位语从句和定语从句的区别考点荟萃在复合句中起名词作用的从句叫做名词性从句。名词性从句主语从句表语从句宾语从句同位语从句连接代词who,whom,whose,which,what,whatever连接副词how,why,when,wherehowever,wherever连接词that,whether,if,becauseasif/asthough（不充当从句的任何成分）引导名词性从句的关联词
2、在名词性从句中一律用陈述句的语序，即使从句表达的是疑问含义。Theproblemiswhathehasdonetothelittleboy.问题是他对那个小男孩做了些什么。1.主语从句在句中作主语的句子叫主语从句。主语从句通常由从属连词that，whether和连接代词what,who,which,whatever,whoever以及连接副词how,when,where,why等词引导。that在从句中无词义，whether有词义，他们不充当句子成分，只起连接作用；连接代词和连接副词在句中既保留自己的疑问
3、含义、又起连接作用，在从句中充当成分。Whathewantstotellusisnotclear.他要跟我们说什么，还不清楚。Whowillwinthematchisstillunknown.WheretheEnglisheveningwillbeheldhasnotyetbeenannounced.Thathestoleabikewastrue.单个的主语从句作主语时，谓语动词用单数形式。如果是两个或两个以上的主语从句作主语，谓语动词则用复数形式。Whereandwhenhewasbornhasnotb
4、eenfound.Whenthepersonwasmurderedandwhyhewasmurderedarestillunknown.有时为避免句子头重脚轻，常用it代替主语从句作形式主语放于句首，而把主语从句置于句末。主句的谓语动词一般用单数形式。常用句型如下：1）It+be+名词+（nowonder,anhonor,agoodthing,apity,afact,goodnewsetc.)that从句It’sapitythatwecan’tgo.It’snosurprisethatourteamhas
5、wonthegame.(我们队赢得了比赛，这不足为奇。）2）It+be+形容词(obvious,true,natural,surprsing,possible,likely,certain,probable,etc.+that从句Itiscertainthatshewilldowellinherexam.Itisprobablethathetoldhereverything.3）It+be+动词的过去分词(said,reported,supposed,expected,announced,suggeste
6、d,proposed,desired,etc.)+that从句ItissaidthatMr.GreenhasarrivedinBeijing.ItisdecidedthatthemeetinghasbeenputofftillnextMonday.4）It+不及物动词+that从句Itseemed(happened,doesn’tmatter,hasturnedout)thatItdidn’tmatterthathewasn’tpresent.注意:在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时
7、，谓语动词要用虚拟语气“(should)+do”，常用的句型有：Itisnecessary/important,apity//natural/strange/vital//essentialetc.)that…It’sstrangethatyoushouldhavedonesuchasillything.It’sapitythatyou(should)besuchakindofperson.练习：Itisobvioustothestudents___theyshouldgetwellpreparedfor
8、theirfuture.A.asB.whichC.whetherD.that选D,that引导主语从句，在从句中不作句子成分，it是形式主语2.____isknowntousallisthatthe2008OlympicGameswereheldinBeijing.A.ItB.WhatC.AsD.WhichB,句意：我们都知道，2008年奥运会在北京举行。本题是由一个主语从句—isknowntousall和一个表语从句that
